Telephone system for fire-hose.



PATENTED APR. 28, 1908.

H. GROSWITH. TELEPHONE SYSTEM FOR FIRE HOSE. APPLICATION FILED MAR. s, 1905. RENEWED MAIL-24, 190a.

EN EN ER um-11- oz HA my Geo sw/Tn MM WW w m 5 V citizen of the United States,

of Philadelphia, in the county prove and simplify respectively end views of the two parts of the contact.

' the ends of the hose UNITED STATES PATENT OFFICE.

HARRY enoswirn, 0F PHILAD LPHIA, PENNSYLVANIA.

TELEPHONE SYSTEM FOR FIRE-HOSE.

Specification of Letters Patent.

Patented April 28, 1908.

Application filed use. a, 1905, Serial No. 248,973. Renewed March 24, 1908. Serial No. 422,964.

To all whom it may 'concem:-'

Be it-known that I, HARRY GROSWITH, a and resident 0f phia and State of Pennsylvania, have invented certain new and useful Im rovements in Tele hone Systems for Fireose, of which the ollowing is a specification. a

This invention relates to fire hose such as is rovided with telephone connections.

he objects of the invention are to imthe; electrical contact means in the coupling members "of the hose. With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of arts and in the details of construction hereinafter described and claimed. I

In the accompanying drawing, Figure 1 is a longitudinal section of a hose and coupling showing the connections. Figs. 2 and 3 are coupling. Fig. ion-an enlarged scale represents a portion of the coupling showing the At the end of each length'of hose 2 and Within the cou ling pieces 21 22 are outwardly incline soft or yielding insulatingblocks 26 into which the wires 23 extend and terminate in contact ieces '27. These normally project slightly eyond the faces of the insulating portions 26 so that when the parts of the hose are coupled together, as shown in Fig. 1 of the drawings, the contact pieces'27 will be firmly brought into contact.

, It will benoted that the contact pieces in within the flanges of the coupling members so that they are fully protected. It is also to be noted that where the non-rotarycoupnecting ling parts are used on the hose the electric conblocks are placed in fixed relation thereto so that they will be sure to engage and make contact whenever the hose is coupled. In the presentinstance these non-rotary coupling parts consist of ears 211 projecting laterally from the male cou ling member 21 at opposite sides thereof an hooks 221 pivotally attached to the female coupling member 22 for engaging therewith.

WhileI have described the device and its connection in relation to a hose used for fire purposes, it is of course obvious that'by the term fire hose 1 include any hose, whether These flanges extend longitudinally,

' or not it is being used, or isparticularly and especially adapted to be used for fire puroses. Y In accordance with this invention, the two lengths ofhose are coupled by a two art coupling comprising annular members a ing annular integral flanges, against the rear interior faces of internally projecting which the ends of the hose lengths abut.

are provided with longitudinal apertures extending through the same adapted to register when the members are coupled. In these apertures are provided the insulating blocks having contacts which normally project beyond the faces of the blocks. The wires are preferably wholly embedded in the walls of the hose lengths and extend through the a ertures of the flanges of the cou ling mem ers and terminate in contact Wit the contactsin the insulating blocks. An annular insulating gasket is adapted to be compressed in grooves in the inner edges of the anges to prevent access of water or other material to the contacts.

Without specifying materials, or enumerating equivalents, what I claim and desire to secure by Letters Patent is z- The combination of two lengths of hose adapted to be coupled, a'two part coupling comprising annular members having annular j integral internally projecting flanges against the rear interior faces of which the ends of the hose lengths abut, said flan es having longitudinal apertures extending through the same adapted to register when the members are coupled, insulating blocks in said aper tures, contacts in said blocks normally projtpcting slightly beyond the faces of the locks, 'wires wholly embedded in the walls of the hose lengths and extending through the apertures in the flanges of the coupling members and terminating in contact with said contacts, and an annular insulating gasket adapted to be compressed in grooves in the inner edges of the flanges and revent access of water or other material to t e con- 'tacts.

1 In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

HARRY GROSWITH.

Witnesses:

Gno. W. JAEKEL, Gno. L; COOPER. 

